下颈椎棘突及棘突间隙影像解剖及其临床意义

目的　测量下颈椎棘突及棘突间的解剖参数，为试制颈椎棘突间非融合固定装置提供解剖学依据。 方法　收集46名（男性22人，女性24人）进行颈椎CT扫描的志愿者，将扫描信息传至GE AW4.4工作站测量棘突长度、宽度、高度、倾斜角度以及相邻棘突间距。并做统计学分析。 结果　男女存在显著差异，男性下颈椎棘突：C7最长，C3最短；C7最宽，C5最薄；C7最高，C5最矮；C6倾斜角度最大，C3最小；C3/C4棘突间距最大，C6/C7最小。女性下颈椎棘突：C7最长，C3最短；C7最宽，C4最薄；C7最高，C3最矮；C7倾斜角度最大，C3最小；C3/C4棘突间距最大，C6/C7最小。 结论　本研究较全面地测量了下颈椎棘突的相关指标，包括棘突长度、宽度、高度、倾斜角度以及相邻棘突间距，为试制颈椎棘突间非融合固定装置提供了一定的数据支持和指导意义。

Clinical significance of imaging observation on spinous process and interspinous space anatomy of subaxial cervical spine

Objective　The applied anatomy of the spinous process and interspinous space of subaxial cervical spine was studied, and the anatomic parameters were quantified to provide an anatomical basis for further biomechanical studies and for the preparation of interspinous dynamic fixing device.　Methods　Imaging data of a total of 46 persons (22 males and 24 females) who underwent cervical spine CT scans were imported to GE AW4.4 workstation for measurements of the length, width, height, tilt angle, and interspinous space of the spinous process.　Result　There is a significant difference between males and females. For subaxial spinous process of males, the largest value of length is in C7, and the smallest one is in C3; the largest value of width is in C7, and the smallest one is in C3; the largest value of height is in C7, and the smallest one is in C5; the largest value of tilt angle is in C6, and the smallest one is in C3; the largest value of interspinous space is in C3/C4, and the smallest one is in C6/C7. For subaxial spinous process of females, the largest value of length is in C7, the smallest one is in C3; the largest value of width is in C7, and the smallest one is in C4; the largest value of height is in C7, and the smallest one is in C3; the largest value of tilt angle is in C7, and the smallest one is in C3; the largest value of interspinous space is in C3/C4, and the smallest one is in C6/C7.　Conclusion　This study comprehensively surveyed the related indexes of subaxial cervical spine, including the length, width, height, tilt angle, and interspinous space, which provides the data to support and guide interspinous dynamic fixing device of subaxial cervical spine.